update disableLogs() implementation, fixes #115

android/src/main/java/com/arthenica/flutter/ffmpeg/FlutterFFmpegPlugin.java

@@ -175,7 +175,13 @@ public void apply(final LogMessage logMessage) {
 
         } else if (call.method.equals("disableLogs")) {
 
-            Config.enableLogCallback(null);
+            Config.enableLogCallback(new LogCallback() {
+
+                @Override
+                public void apply(LogMessage message) {
+                    // EMPTY LOG CALLBACK
+                }
+            });
 
         } else if (call.method.equals("enableStatistics")) {
 

ios/Classes/EmptyLogDelegate.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2020 Taner Sener
+ *
+ * This file is part of FlutterFFmpeg.
+ *
+ * FlutterFFmpeg is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FlutterFFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FlutterFFmpeg.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <mobileffmpeg/LogDelegate.h>
+
+/**
+ * Empty log delegate
+ */
+@interface EmptyLogDelegate : NSObject<LogDelegate>
+@end

ios/Classes/EmptyLogDelegate.m

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2020 Taner Sener
+ *
+ * This file is part of FlutterFFmpeg.
+ *
+ * FlutterFFmpeg is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FlutterFFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FlutterFFmpeg.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "EmptyLogDelegate.h"
+
+/**
+ * Empty log delegate
+ */
+@implementation EmptyLogDelegate
+
+- (void)logCallback: (int)level :(NSString*)message {
+}
+
+@end

ios/Classes/FlutterFfmpegPlugin.m

@@ -18,6 +18,7 @@
  */
 
 #import "FlutterFFmpegPlugin.h"
+#import "EmptyLogDelegate.h"
 
 #import <mobileffmpeg/ArchDetect.h>
 #import <mobileffmpeg/MobileFFmpegConfig.h>
@@ -53,6 +54,16 @@
  */
 @implementation FlutterFFmpegPlugin {
     FlutterEventSink _eventSink;
+    EmptyLogDelegate *_emptyLogDelegate;
+}
+
+- (instancetype)init {
+    self = [super init];
+    if (self) {
+        _emptyLogDelegate = [[EmptyLogDelegate alloc] init];
+    }
+
+    return self;
 }
 
 - (FlutterError *)onListenWithArguments:(id)arguments eventSink:(FlutterEventSink)eventSink {
@@ -145,7 +156,7 @@ - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
 
     } else if ([@"disableLogs" isEqualToString:call.method]) {
 
-        [MobileFFmpegConfig setLogDelegate:nil];
+        [MobileFFmpegConfig setLogDelegate:_emptyLogDelegate];
 
     } else if ([@"enableStatistics" isEqualToString:call.method]) {